package unit2;

public class ArrayDemo1 {
    public static void main(String[] args) {
        int a[] = new int[5];
        System.out.println("数组的长度是：" + a.length);
//        a.length = 10;
        a = new int [10];
        System.out.println("数组的长度是：" + a.length);
    }
}
